diff --git a/Cargo.toml b/Cargo.toml
index 6ced850a..1f38d142 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,4 +65,4 @@ features = ["compile-time-rng"]
 optional = true
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-instant= "0.1.4"    # WASM implementation of std::time::Instant
+instant= { version = "0.1.4", features = ["wasm-bindgen"] } # WASM implementation of std::time::Instant
diff --git a/README.md b/README.md
index cc1411a9..d79c1218 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,9 @@ to add scripting to any application.
 Supported targets
 -----------------
 
-* All common targets, including [WASM] and `no-std`.
+* All common CPU targets for Windows, Linux and MacOS.
+* [WASM]
+* `no-std`
 
 Features
 --------
@@ -185,9 +187,11 @@ When building for WASM, certain features will not be available, such as the scri
 from external script files.
 
 Also look into [minimal builds] to reduce generated WASM size.  As of this version, a typical, full-featured
-Rhai scripting engine compiles to a single WASM file around 200KB gzipped. When excluding features that are
+Rhai scripting engine compiles to a single WASM file less than 200KB gzipped. When excluding features that are
 marginal in WASM environment, the gzipped payload can be further shrunk to 160KB.
 
+In benchmark tests, a WASM build runs scripts roughly 1.7-2.2x slower than a native optimized release build.
+
 Related Resources
 -----------------